When I tried to save a plot from the TkAgg GUI, it gave me an error message, here's the whole sesssion

>>> from pylab import *
>>> x = arange(1, 10, 1)
>>> y = sin(x)
>>> plot(x, y)
[<matplotlib.lines.Line2D instance at 0x017A6DC8>]
>>> show()
####  then after I click save on the GUI, I get this error message ########
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python24\lib\lib-tk\Tkinter.py", line 1345, in __call__
    return self.func(*args)
  File "C:\Python24\Lib\site-packages\matplotlib\backends\backend_tkagg.py", lin
e 635, in save_figure
    self.canvas.print_figure(fname, dpi=300)
  File "C:\Python24\Lib\site-packages\matplotlib\backends\backend_tkagg.py", lin
e 183, in print_figure
    agg.print_figure(filename, dpi, facecolor, edgecolor, orientation)
  File "C:\Python24\Lib\site-packages\matplotlib\backends\backend_agg.py", line
469, in print_figure
UnicodeEncodeError: 'ascii' codec can't encode characters in position 36-37: ord
inal not in range(128)

Any ideas how to fix that?

thanks in advance,

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